This cable really blew me away and is very flexible. Its a custom made Furutech Cable with Rhodium/Copper Carbon Fiber Connectors. $500 for 1m and you can also home audition before you buy.
https://www.tweekgeek.com/tweeked-out-furutech-fp-s022n-power-cable/
https://www.tweekgeek.com/tweeked-out-furutech-fp-s022n-power-cable/